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/* sxiv: window.c
* Copyright (c) 2012 Bert Muennich <be.muennich at googlemail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#define _POSIX_C_SOURCE 200112L
#define _WINDOW_CONFIG
#include <string.h>
#include <locale.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include "options.h"
#include "util.h"
#include "window.h"
#include "config.h"
enum {
H_TEXT_PAD = 5,
V_TEXT_PAD = 1
};
static Cursor carrow;
static Cursor cnone;
static Cursor chand;
static Cursor cwatch;
static GC gc;
Atom wm_delete_win;
struct {
int ascent;
int descent;
XFontStruct *xfont;
XFontSet set;
} font;
void win_init_font(Display *dpy, const char *fontstr) {
int n;
char *def, **missing;
font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
if (missing)
XFreeStringList(missing);
if (font.set) {
XFontStruct **xfonts;
char **font_names;
font.ascent = font.descent = 0;
XExtentsOfFontSet(font.set);
n = XFontsOfFontSet(font.set, &xfonts, &font_names);
while (n--) {
font.ascent = MAX(font.ascent, (*xfonts)->ascent);
font.descent = MAX(font.descent,(*xfonts)->descent);
xfonts++;
}
} else {
if ((font.xfont = XLoadQueryFont(dpy, fontstr)) == NULL &&
(font.xfont = XLoadQueryFont(dpy, "fixed")) == NULL)
{
die("could not load font: %s", fontstr);
}
font.ascent = font.xfont->ascent;
font.descent = font.xfont->descent;
}
}
unsigned long win_alloc_color(win_t *win, const char *name) {
XColor col;
if (win == NULL)
return 0UL;
if (XAllocNamedColor(win->env.dpy,
DefaultColormap(win->env.dpy, win->env.scr),
name, &col, &col) == 0)
{
die("could not allocate color: %s", name);
}
return col.pixel;
}
void win_init(win_t *win) {
win_env_t *e;
if (win == NULL)
return;
e = &win->env;
if ((e->dpy = XOpenDisplay(NULL)) == NULL)
die("could not open display");
e->scr = DefaultScreen(e->dpy);
e->scrw = DisplayWidth(e->dpy, e->scr);
e->scrh = DisplayHeight(e->dpy, e->scr);
e->vis = DefaultVisual(e->dpy, e->scr);
e->cmap = DefaultColormap(e->dpy, e->scr);
e->depth = DefaultDepth(e->dpy, e->scr);
win->white = WhitePixel(e->dpy, e->scr);
win->bgcol = win_alloc_color(win, WIN_BG_COLOR);
win->fscol = win_alloc_color(win, WIN_FS_COLOR);
win->selcol = win_alloc_color(win, SEL_COLOR);
win->barbgcol = win_alloc_color(win, BAR_BG_COLOR);
win->barfgcol = win_alloc_color(win, BAR_FG_COLOR);
win->xwin = 0;
win->pm = 0;
win->fullscreen = false;
win->barh = 0;
win->lbar = NULL;
win->rbar = NULL;
if (setlocale(LC_CTYPE, "") == NULL || XSupportsLocale() == 0)
warn("no locale support");
win_init_font(e->dpy, BAR_FONT);
wm_delete_win = XInternAtom(e->dpy, "WM_DELETE_WINDOW", False);
}
void win_set_sizehints(win_t *win) {
XSizeHints sizehints;
if (win == NULL || win->xwin == None)
return;
sizehints.flags = PMinSize | PMaxSize;
sizehints.min_width = win->w;
sizehints.max_width = win->w;
sizehints.min_height = win->h + win->barh;
sizehints.max_height = win->h + win->barh;
XSetWMNormalHints(win->env.dpy, win->xwin, &sizehints);
}
void win_open(win_t *win) {
win_env_t *e;
XClassHint classhint;
XColor col;
char none_data[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
Pixmap none;
int gmask;
if (win == NULL)
return;
e = &win->env;
/* determine window offsets, width & height */
if (options->geometry == NULL)
gmask = 0;
else
gmask = XParseGeometry(options->geometry, &win->x, &win->y,
&win->w, &win->h);
if ((gmask & WidthValue) == 0)
win->w = WIN_WIDTH;
if (win->w > e->scrw)
win->w = e->scrw;
if ((gmask & HeightValue) == 0)
win->h = WIN_HEIGHT;
if (win->h > e->scrh)
win->h = e->scrh;
if ((gmask & XValue) == 0)
win->x = (e->scrw - win->w) / 2;
else if ((gmask & XNegative) != 0)
win->x += e->scrw - win->w;
if ((gmask & YValue) == 0)
win->y = (e->scrh - win->h) / 2;
else if ((gmask & YNegative) != 0)
win->y += e->scrh - win->h;
win->xwin = XCreateWindow(e->dpy, RootWindow(e->dpy, e->scr),
win->x, win->y, win->w, win->h, 0,
e->depth, InputOutput, e->vis, 0, None);
if (win->xwin == None)
die("could not create window");
XSelectInput(e->dpy, win->xwin, StructureNotifyMask | KeyPressMask |
ButtonPressMask | ButtonReleaseMask | PointerMotionMask);
carrow = XCreateFontCursor(e->dpy, XC_left_ptr);
chand = XCreateFontCursor(e->dpy, XC_fleur);
cwatch = XCreateFontCursor(e->dpy, XC_watch);
if (XAllocNamedColor(e->dpy, DefaultColormap(e->dpy, e->scr), "black",
&col, &col) == 0)
{
die("could not allocate color: black");
}
none = XCreateBitmapFromData(e->dpy, win->xwin, none_data, 8, 8);
cnone = XCreatePixmapCursor(e->dpy, none, none, &col, &col, 0, 0);
gc = XCreateGC(e->dpy, win->xwin, 0, None);
win_set_title(win, "sxiv");
classhint.res_class = "Sxiv";
classhint.res_name = options->res_name != NULL ? options->res_name : "sxiv";
XSetClassHint(e->dpy, win->xwin, &classhint);
XSetWMProtocols(e->dpy, win->xwin, &wm_delete_win, 1);
if (!options->hide_bar) {
win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
win->h -= win->barh;
}
if (options->fixed_win)
win_set_sizehints(win);
XMapWindow(e->dpy, win->xwin);
XFlush(e->dpy);
if (options->fullscreen)
win_toggle_fullscreen(win);
}
void win_close(win_t *win) {
if (win == NULL || win->xwin == None)
return;
XFreeCursor(win->env.dpy, carrow);
XFreeCursor(win->env.dpy, cnone);
XFreeCursor(win->env.dpy, chand);
XFreeCursor(win->env.dpy, cwatch);
XFreeGC(win->env.dpy, gc);
XDestroyWindow(win->env.dpy, win->xwin);
XCloseDisplay(win->env.dpy);
}
bool win_configure(win_t *win, XConfigureEvent *c) {
bool changed;
if (win == NULL)
return false;
changed = win->w != c->width || win->h + win->barh != c->height;
win->x = c->x;
win->y = c->y;
win->w = c->width;
win->h = c->height - win->barh;
win->bw = c->border_width;
return changed;
}
bool win_moveresize(win_t *win, int x, int y, unsigned int w, unsigned int h) {
if (win == NULL || win->xwin == None)
return false;
x = MAX(0, x);
y = MAX(0, y);
w = MIN(w, win->env.scrw - 2 * win->bw);
h = MIN(h, win->env.scrh - 2 * win->bw);
if (win->x == x && win->y == y && win->w == w && win->h + win->barh == h)
return false;
win->x = x;
win->y = y;
win->w = w;
win->h = h - win->barh;
if (options->fixed_win)
win_set_sizehints(win);
XMoveResizeWindow(win->env.dpy, win->xwin, x, y, w, h);
return true;
}
void win_toggle_fullscreen(win_t *win) {
XEvent ev;
XClientMessageEvent *cm;
if (win == NULL || win->xwin == None)
return;
win->fullscreen = !win->fullscreen;
memset(&ev, 0, sizeof(ev));
ev.type = ClientMessage;
cm = &ev.xclient;
cm->window = win->xwin;
cm->message_type = XInternAtom(win->env.dpy, "_NET_WM_STATE", False);
cm->format = 32;
cm->data.l[0] = win->fullscreen;
cm->data.l[1] = XInternAtom(win->env.dpy, "_NET_WM_STATE_FULLSCREEN", False);
cm->data.l[2] = cm->data.l[3] = 0;
XSendEvent(win->env.dpy, DefaultRootWindow(win->env.dpy), False,
SubstructureNotifyMask | SubstructureRedirectMask, &ev);
}
void win_toggle_bar(win_t *win) {
if (win == NULL || win->xwin == None)
return;
if (win->barh != 0) {
win->h += win->barh;
win->barh = 0;
} else {
win->barh = font.ascent + font.descent + 2 * V_TEXT_PAD;
win->h -= win->barh;
}
}
void win_clear(win_t *win) {
win_env_t *e;
if (win == NULL || win->xwin == None)
return;
e = &win->env;
if (win->pm != None)
XFreePixmap(e->dpy, win->pm);
win->pm = XCreatePixmap(e->dpy, win->xwin, e->scrw, e->scrh, e->depth);
XSetForeground(e->dpy, gc, win->fullscreen ? win->fscol : win->bgcol);
XFillRectangle(e->dpy, win->pm, gc, 0, 0, e->scrw, e->scrh);
}
void win_draw_bar(win_t *win) {
win_env_t *e;
int len, x, y, w, tw = 0, seplen;
const char *rt;
if (win == NULL || win->xwin == None)
return;
e = &win->env;
x = H_TEXT_PAD;
y = win->h + font.ascent + V_TEXT_PAD;
w = win->w - 2 * H_TEXT_PAD;
XSetForeground(e->dpy, gc, win->barbgcol);
XFillRectangle(e->dpy, win->pm, gc, 0, win->h, win->w, win->barh);
XSetForeground(e->dpy, gc, win->barfgcol);
XSetBackground(e->dpy, gc, win->barbgcol);
if (win->lbar != NULL) {
len = strlen(win->lbar);
while (len > 0 && (tw = win_textwidth(win->lbar, len, false)) > w)
len--;
w -= tw + 2 * H_TEXT_PAD;
if (font.set)
XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, win->lbar, len);
else
XDrawString(e->dpy, win->pm, gc, x, y, win->lbar, len);
}
if (win->rbar != NULL) {
len = strlen(win->rbar);
seplen = strlen(BAR_SEPARATOR);
rt = win->rbar;
while (len > 0 && (tw = win_textwidth(rt, len, false)) > w) {
rt = strstr(rt, BAR_SEPARATOR);
if (rt != NULL) {
rt += seplen;
len = strlen(rt);
} else {
len = 0;
}
}
if (len > 0) {
x = win->w - tw - H_TEXT_PAD;
if (font.set)
XmbDrawString(e->dpy, win->pm, font.set, gc, x, y, rt, len);
else
XDrawString(e->dpy, win->pm, gc, x, y, rt, len);
}
}
}
void win_draw(win_t *win) {
if (win == NULL || win->xwin == None)
return;
if (win->barh > 0)
win_draw_bar(win);
XSetWindowBackgroundPixmap(win->env.dpy, win->xwin, win->pm);
XClearWindow(win->env.dpy, win->xwin);
}
void win_draw_rect(win_t *win, Pixmap pm, int x, int y, int w, int h,
bool fill, int lw, unsigned long col) {
XGCValues gcval;
if (win == NULL || pm == None)
return;
gcval.line_width = lw;
gcval.foreground = col;
XChangeGC(win->env.dpy, gc, GCForeground | GCLineWidth, &gcval);
if (fill)
XFillRectangle(win->env.dpy, pm, gc, x, y, w, h);
else
XDrawRectangle(win->env.dpy, pm, gc, x, y, w, h);
}
int win_textwidth(const char *text, unsigned int len, bool with_padding) {
XRectangle r;
int padding = with_padding ? 2 * H_TEXT_PAD : 0;
if (font.set) {
XmbTextExtents(font.set, text, len, NULL, &r);
return r.width + padding;
} else {
return XTextWidth(font.xfont, text, len) + padding;
}
}
void win_set_title(win_t *win, const char *title) {
if (win == NULL || win->xwin == None)
return;
if (title == NULL)
title = "sxiv";
XStoreName(win->env.dpy, win->xwin, title);
XSetIconName(win->env.dpy, win->xwin, title);
XChangeProperty(win->env.dpy, win->xwin,
XInternAtom(win->env.dpy, "_NET_WM_NAME", False),
XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
PropModeReplace, (unsigned char *) title, strlen(title));
XChangeProperty(win->env.dpy, win->xwin,
XInternAtom(win->env.dpy, "_NET_WM_ICON_NAME", False),
XInternAtom(win->env.dpy, "UTF8_STRING", False), 8,
PropModeReplace, (unsigned char *) title, strlen(title));
}
void win_set_bar_info(win_t *win, const char *li, const char *ri) {
if (win != NULL) {
win->lbar = li;
win->rbar = ri;
}
}
void win_set_cursor(win_t *win, cursor_t cursor) {
if (win == NULL || win->xwin == None)
return;
switch (cursor) {
case CURSOR_NONE:
XDefineCursor(win->env.dpy, win->xwin, cnone);
break;
case CURSOR_HAND:
XDefineCursor(win->env.dpy, win->xwin, chand);
break;
case CURSOR_WATCH:
XDefineCursor(win->env.dpy, win->xwin, cwatch);
break;
case CURSOR_ARROW:
default:
XDefineCursor(win->env.dpy, win->xwin, carrow);
break;
}
XFlush(win->env.dpy);
}
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